Geomagnetic storms!
Isostasy
The eruption of a very large volcano
Sudden heavy rain is called a Cloud Burst of a Squall.
The sudden movement of the earth's crust is called and earthquake
Not sure about the 'sudden' part, but it's called rebound.Really its called Elastic Rebound.....
what are some examples of seismic disturbances
earthquake/fissure
True((;
When the CMEs impact the Earth's magnetosphere, a storm sudden commencement or sudden impulse (SSC or SI), a sudden increase in the magnetic field strength detected at the surface, almost instantaneously occurs.
The sudden vibration in the plates inside the crust causes the earths crust to rise & fall.
Isostasy
EARTHQUAKE
Scientists follow the magnetic field lines of the earth and measure them regularly. They will compare the earlier measurements and note the changes in position of the magnetic axis and decide if it is changing or not! Also if there are sudden changes observed in magnetic field lines bec of solar flares from sun. Magnetism is an interesting chapter! learn more by watching and subscribing to this space @PhysicsFusion-sm3tr Hope this helps
No, it it is when two plates come together in a sudden shift.
The eruption of a very large volcano
The term is 'earthquake'.
no. earthquakes are set off by sudden movements in the earths crust